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(No Model.) 2 Sheets-Sheet 1. C. B. MAXSON. SHEET DELIVERY APPARATUS POEPRINTING MACHINES. Non

Patented June 18, 1889.

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(No Model.) 2 sheets-sheen 2.

C. B. IVIAXSON.

SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

No. 405,582. Patente'dJune 18, 1889.

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UNITED STATES Arnim OFFICE.

CHARLES B. MAXSON, OF VVESTERLY, RHODE ISLAND.

SHEET-DELIVERY APPARATUS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 405,582, dated J' une18, 1889.

Application tiled September 20, 1888.

terly, in the county of lvashington and State' of Rhode Island, haveinvented new-and useful Improvements in Sheet-Delivery Apparatus forPrinting-h/Iachines, of which the following is a specification.

My invention relates to improvements in sheet-delivery apparatus forprinting-presses; and it has for its obj ect to provide novel mechanismfor preventing the printed faces of the sheets from coming in contactwith parts of the apparatus during their delivery to the receiving-table, and to deliver the sheets printed face uppermost.

The object of my invention I accomplish in the manner and by thecombination of devices hereinafter described and claimed, referencebeing made to the accompanying drawings, in which- Figure l is a sideelevation of a printingpress provided with my improved sheet-deliveryapparatus. Fig. 2 is an end elevation of the same as seen from theleft-hand side of the sheet. Fig. 3 is an end elevation, on a largerscale than the preceding gures, of the tapes and the delivery-table intheir proper position on the press. Fig. 4 is a vertical longitudinalsection on the same scale as Fig. 3, showing the mechanism which retainsthe printed sheet and which delivers the saine to the receivin g-table.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates the frame of a printing-press,which frame is constructed to support the rotating impressioncylinder Band the reciprocating type-bed O in their proper relative positions. Inthe example shown in the drawings, Figs. l and 2, the reciprocatingmotion is imparted to the type-bed C by means of an ordinary rack andknuckle shaft, consisting of a spur-wheel D, arranged on a shaft Dl in aproper position to engage with a horizontal row of pins on a rack-barD2, pendent from the type-bed O. However, other known means may beelnployed for the specified purpose.

Upon the shaft of the impression-cylinder B is mounted a cog-wheel B',which is properly connected by intermediate gears to a gear Serial No,285,896. (No model.)

-arranged upon the driving-shaft B2 of the press, whereby the rotarymotion is imparted to the impression-cylinden In a suitable cavity ofthe cylinder B are arranged the usual grippers B3, Fig. l, for holdingthe sheet to be printed upon the cylinder, these grippers lon gitudin alguideways E', which are intended I to support and guide a table, which Ishall hereinafter term the delivery-table E,and this table is adapted toreciprocate so as to lie at stated intervals below tapes F, which extendaround a pair of tape-rollers G G', having suitable bearings in theframe, and these tapes are in a position to receive the printed sheetfrom the impression-cylinder. One of these tape-rollers G is situated inclose proximity to the impression-cylinder B, while the second roller Gis placed at such a distance from roller G that the length of thereceiving-surface formed by the tapes F, extending around the saidrollers, will be fully as great, or preferably somewhat greater, thanthe length of the sheet to be printed.

The reciprocating motion is imparted to the delivery-table'E, in theexample :shown in the drawings, by means of a suitable gearconnectionwith a rack C on the type-bed O. This connection consists of agear-wheel C2, mounted on a shaft c, which has bearings in thepress-frame and carries on its other end a bevel-gear O3, which meshesinto a bevelgear O4, secured to a shaft c', which also has bearings inthe press-frame, and on the end of this shaft c is a similar bevel-gearO5, which engages a bevel-gear C6 on the driving-shaft c2 of thedelivery-table. Upon this shaft are a pair of gear-wheels C', which areproperly arranged to engage with racks E2 E2 on the bottom of thedelivery-table.

A continuous linear motion lin the direction indicated by arrow l inFig. l is imparted to IOO the top tape F by rotating thc tape-roller Gin the proper direction. As shown in the drawings, this rotation of thetape-roller G is accomplished by arranging a pulley7 g upon the shaft gof the said roller G, which pulley is connected, by means of a belt g2,with a pulley g3, arranged in a proper position on the shaft of theimpression-cylinder B; or the said pulley g3 may be formed integral with.the gear B. The connections of the tapes F and the reciprocatingdelivery-table E with t-heir respective drivers are so designed that thelinear velocity of the said tapes and table will be the same, thisequality of speeds being necessary to secure the proper transfer of thesheet to the delivery-table E, since the said sheet is delivered to thesaid table during its forward stroke from under the tapes.

Itis evident that the tapes F and the reciprocating table E would form aworki ng combination, since the printed sheets would be deposited uponthe said table E and by the tapes F, and could be allowed to remain onthe table until a sufcientnumber had accumulated, whence they could beremoved by the person in attendance; but I have found it desirable toremove each individual sheet from the delivery-table as soon as it isdeposited thereon. To accomplish this purpose, I have arranged a set ofgrippers at the end of the frame in a proper position to retain thesheet while the delivery table moves away from the grippers and torelease the sheets at the proper time. The specific construct-ion andarrangement of this mechanism are as follows: At the eXtreme end of theframe are arranged on a suitable rod a se? of stationary fingers H,Figs. 2 and 3, the ends of which are on a level slightly above that ofthe top of the table, so that the sheet can pass under the said fingers.Directly below these fingers H are a series of grippers H, which aresecured to and can turn with a gripper-shaft 7L', having bearings in theframe. To the ends of this gripper-shaft h are secured levers H2, whichare fulcrumed at h2 to the press-frame, and from each of these leversextends a rod H3, Figs. l and 4, having bearings h3 in the pressframe,and said rods are provided with dogs h4 h5, which are adapted to beengaged at certain intervals by projecting downward from thedelivery-table E. The dogs hA1 h5 upon the rods are placed at such adistance apart and in such position upon the rods H3 that shortly beforethe delivery-table stops in its travel toward the impression-cylinderthe post e on the said table engages the dogs h5 on the rod H3 and opensthe grippers H. On the return motion of the receiving-table toward thegrippers, and directly after the forward end of the sheet projects intothe grippersfthe post e engages the dogs h4 and the grippers close uponthe sheet, and on the return motion of the delivery-table they are againopened, as before described, and release the sheet, which then fallsupon a receivingtable I, situated in a proper position to re- -thesheet-guide shaft. imparted to cam-shaf t J 3 by means of a gear ceivethe said sheet. To allow the grippers to obtain a hold on the sheetwithout the necessity of having the latter projecting beyond thedelivery-table, I cut slots e in the proper end of the table, into whichslots the grippers proj ect.

To facilitate the delivery of the sheet from the impression-cylinder Bupon the tapes F, I employ sheet-guides J, which are arranged upon ashaft J extending between the said cylinders and the tape-roller G, andwhich sheet-guides are actuated by a cam J2 on a shaft J 3, which camengages with a roller-stud J 4, arranged on the end of a lever J 5,secured to A rotary motion is J6, which meshes into a gear Bu1 on theslotshaft of the impression-cylinder B.

In the position shown in the drawings the press has just finishedprinting a sheet. The type-bed is on its back-center, and thedelivery-table E is in extreme forward position toward the grippers H,and a printed sheet on the said table is under the said grippers, whilethe front edge of the sheet just printed is under the grippers of theimpression-cylinder B. apparatus is n ow as follows: When the typebedstarts on its return toward the impression-cylinder,the delivery-table Eparticipates in its motion in the same direction,and when the type-bedis at the other end of its stroke the delivery-table will have advancedto the end of its course and will be in the position shown by the singledotted line o: in Fig. 1- that is to say, will be directly under thetape F. During the time thus elapsing the printed sheet will have beenadvanced outward upon the tapes, and by the time the type-bed reversesand starts toward the forward end of the press the sheet will lie withits advanced edge directly in a vertical line about the edge of thetable, facing the grippers H. Now, when the type-bed continues in itsmotion toward the forward end of the press, the delivery-table travelsin the same direction and the printed sheet is fed upon the said tablefrom the tapes. During the previously-described motion of thedeliverytable in the direction toward the impressioncylinder the samehas engaged with the lever-rod H3 and opened the gripper H, and the sameremains open until it is closed by the table acting on dogs h4, whenceit closes upon the sheet and retains the same while the table moves inthe direction of the arrow 2, marked thereon, until the free end of thesheet clears the delivery-table, whence the grippers are opened by theaction of the table upon dogs h5, whereupon the grippers open andrelease the paper, which then falls upon the table printed side up. Thiscompletes the operations, and the sheet is delivered without having itsprinted face brought into contact with any part of the apparatus.

Vha-t I claim as new, and desire to secure by Letters Patent, is-

The operation of the sheet-delivery IOO IIO

l. The combination, with the impressioncylinder of a printing-press, ofthe traveling tapes F,receiving the printed sheet from the cylinder, thedelivery-table E, reciprocating independently of and back and forthbelow the tapes, and on its forward movement receiving the printed sheetfrom the forward portion of the tapes, and a receiving-table I, forreceiving the sheet from the deliverytable, substantially as described.

2. The combination, with the impressioncylinder of a printing-press, ofthe traveling tapes receiving the printed sheet from the cylinder, andthe delivery-table E,reciprocat ing independently of and backY and forthbelow the tapes and moving at the same speed as the tapes to receive theprinted sheet therefrom as said table moves forward from beneath thetapes, substantially as described.

3. The combination, with the traveling tapes F and stationaryreceiving-table I, of a delivery-table E, reciprocating` independentlyof and back and forth below the tapes, and on its forward movementreceiving the sheet from the tapes, and means, substantially asdescribed, for retaining the sheet and delivering it to thereceiving-table when the deliverytable moves backward below the tapes,substantially as described.

4. The combination, with the traveling tapes F and receiving-table I, ofa deliverytable E, reciprocating` back and forth below and independentof the tapes and receiving the sheet therefrom, and gripper-fingers, oneof which is opened and closed positively by the movement of the table,substantially as described.

5. The combination, with the traveling tapes F, of a delivery-table E,reciprocating independently of the tapes and grippers H H', one of whichis swung to aclosed position by the table when at or near the end of itsforward movement and to an open position by said table when at or nearthe end of its backward movement, substantially .as described.

0. The combination, with the reciprocating delivery-table E, of thestationary gripper H, the movable gripper H, the lever H2, the rod H3,secured thereto, and the dogs h4 h5 thereof, adapted to be engaged bythe delivery-table, substantially as shown and described.

7. The combination, with the impressioncylinder and type-bed, of thetape-rollers G G', one rotated bya gear-connection with the cylinder,the tapes F, extending around and moved by the rollers, thedelivery-table E,ren ciprocated back and forth independently of the tapeand tape-rollers, and grippers H H', one of which is swung to both itsopen and closed positions by the action of the deliverytable,substantially as described.

8. The combination, with the impressioncylinder and reciprocating type-bed of a printing-press, of traveling tapes driven by gear-connectionwith the cylinder, a deliverytable reciprocating below and independentof the tapes and operated by a gear-connection with the type-bed, areceiving-table, and grippers for retaining the sheet as the table movesbackward, substantially as described.

In testimony whereof I have hereunto set my hand and seal in thepresence of two subscribing witnesses,

CHARLES B. MAXSON. [L s] Vitnesses:

GEO. P. FENNER, GEORGE COLFAX.

